| 摘要 |
PROBLEM TO BE SOLVED: To provide a polycarboxylic acid based polymer composition being a composition including a polycarboxylic acid based polymer obtained by polymerizing an unsaturated monocarboxylic acid based monomer or an unsaturated dicarboxylic acid based monomer using a non-redox based initiator, in which coloration with the lapse of time is effectively prevented, and also, to provide a method for effectively preventing the coloration of the aqueous solution of a polycarboxylic acid based polymer obtained by polymerizing an unsaturated monocarboxylic acid based monomer or an unsaturated dicarboxylic acid based monomer using a non-redox based initiator.SOLUTION: Provided is a polycarboxylic acid based polymer composition, containing: a polycarboxylic acid based polymer obtained by polymerizing monomer compositions including an unsaturated monocarboxylic acid based monomer and/or an unsaturated dicarboxylic acid based monomer using a non-redox based initiator; and an oxide as a polymerization inhibitor.SELECTED DRAWING: None |
